Links help!

[sheebakhan]

ok im trying to update a site which i haven't made myself. I want to add a rollover menu button to each page - but the site is too big for me to do manually, is there a way i can make the changes to one page, and it updates automatically to each page? im sure there's a way, i just can't figure it out


site : www.general.ca - u see the 'products' and 'distributors' drop down menu - i want to add the same thing to 'about us'

thanks so much.